Paper punch

ABSTRACT

A paper punch with adjustable and depressable paper stop means is described having a novel construction of means operating for the cutting punches by cams. In addition a single cam depresses the paper stop out of the way and also brings a feed roll into contact with the punches sheets for ejecting the same under the cutting punches. The paper stop is adjustable with respect to the cutting punches whereby the location of the punched holes with respect to the edge of the sheets may be adjusted without affecting the means for depressing the paper stop means or the timing thereof.

United States Patent [72] Inventor Frank C. Blowsky 2,701,013 2/1955Klasing H 83/391 X 46-16195thSt.,Flushing.N.Y.11358 2,985,052 5/1961Mentzer et a1 83/524X 121] App]. No. 861.725 22 Filed Sept 29 9 IPrimary Examiner-James Mi Meister 45 patented Ju|y 13 97] Attorney-JohnM. Monstream [$41 PAPER PUNCH 10 Claims, 8 Drawing Figs. I

7 ABSTRACT: A paper punch with ad ustable and depressable [$2] 11.8. C183/156, Paper stop means is described having a novel construction f83/391 83/463' 83/524' 83/571 83/620 means operating for the cuttingpunches by cams. In addition [51] Int. Cl 826d 7/16 a single camdepresses the paper stop out f the way and also [so] new of 83/156-brings a feed roll into contact with the punches sheets for 391 468,524, 571, 2 ejecting the same under the cutting punches. The paper stopis adjustable with respect to the cutting punches whereby the 10- [56]Reerences Cited cation of the punched holes with respect to the edge ofthe UNITED STATES PATENTS sheets may be adjusted without afiecting themeans for 1. 31.468 7/1912 Power 83/156 X depressing the paper stopmeans or the timing thereof.

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1 9 1 r is 11 E 7 r 67 it s PATENTEU JUL 1 3 mm SHEET 1 BF 3 INVENTOR BFRANK C. BLOWSKY ATTORNEY PATENTED JUL 1 3 1971 SHEET 3 BF 3 ATTORNEYINVENTOR FRANK C.BLOWSKY jrkn OSNC PAPER PUNCH The paper punch isdesigned primarily for punching holes adjacent to the edge of a pile ofsheets of paper which holes receives a fastening device although theconstruction of punch is applicable to other sheets provided there issufficient power.

It is an object of the invention to construct a paper punch having paperstop means using stops which are depressed below the table top by cammeans so that the punched sheets can be ejected straight through thepaper punch towards the back and under the cutting punches.

Another object is to construct a simple and new connection with thepunch bar which drives the cutting punches through the pile of sheets.

In addition, it is an object to construct a paper stop means that can beadjusted relatively to the cutting punches thereby enabling the distanceof the holes from the edge of the pile of sheets to be selected asdesired without effecting any other function of the punch.

Another object, is to provide a cam for depressing the paper stop meansand using the same cam to elevate an ejecting roller into contact withthe pile of sheets so that a fixed time relation is unalterablymaintained between the depression of the stop means and the engagementof the ejecting roller with the pile of punched sheets to be ejected.

Other objects of the invention will be more apparent from the followingdescription when taken in connection with the accompanying drawingsillustrating a preferred embodiment thereofin which:

FIG. I is a front view of the punch with portions removed and in sectionfor clarity;

FIG. 2 is an end view of the punch and partially in section as taken online 2-2 of FIG. 1;

FIG. 3 is a sectional view taken on line 3-3 of FIG. 1;

FIG. 4 is a partial rear view as seen from line 4-4 of FIG. 3 with theclutch in section;

FIG. 5 is an enlarged view of the clutch solenoid and its clutchoperating means;

FIG. 6 is a view of a clutch element;

FIG. 7 is an enlarged detail of the stop means; and

FIG. 8 shows a nonrepeat circuit.

The paper punch includes a frame of suitable form, that shown includinga pair of spaced sideplates 10 which are retained in spaced relation bya pair of crossbars 11 which are secured to the plates by bolts 12. Theframe also includes a top plate 13 which is secured to the crossbars bybolts 14. Supporting plates 15 are part of the frame located between thesideplates and secured in spaced relation thereto such as by sleeves 16and bolts 17. A secondary supporting plate and gear casing 18 is securedto the one of the first supporting plates by suitable spacers l9 andnuts 20. A table 21 is secured to the sideplates by bolts 22.

The paper punch includes a main shaft 24 having a belt pulley 25 mountedthereon to be belt driven by a suitable motor. Preferably the main shafthas fly wheels 26 at each end thereof for smoothing out the powerdelivered to the cutting punches. The drive shaft carries a pinion 27secured to the drive shaft which meshes with a gear 28 carried by a jackshaft 29 mounted in the supporting plates in bearings. The jack shaft isconnected through a pinion 30 to a gear 31 normally freely rotatable ona camshaft 32 and held against axial movement by a retaining ring 33.

A punch bar 36 is mounted for reciprocation in slots 37, FIG. I providedin the sidewalls. A selector pin frame formed by a spaced flange means38 is secured to the punch bar by bolts 39. The selector pin framecarries a series of selector pins 40 slidably mounted in the flangemeans, each selector pin carries a punch connecting portion 41 at theend thereof which is movable into a position between the punch bar andits cutting punch and to a position away therefrom when it is desiredthat one or more of the cutting punches be rendered inoperative. Theconnecting portion is rectangular or square so that it is retainedagainst turning by a flat thereof engaging BEST AVAMBLE COPY the bottomof the punch bar. A spring 42 engaging ir. a retain ing notch 43 in theselector pin retains the connecting portioz. of the selector pin inoperative position spaced from the end of the cutting punch or in a likeadjacent notch to retain the same in a position spaced from alignmentwith the punch bar or in inoperative position.

Each cutter or cutting punch 48 is mounted for reciprocation in acutting punch frame formed by a pair of punch plates 49 secured by abolt 50 to a punch support bar 51 which is attached to end brackets 52by bolts 53 and this bar is secured to the end of the top plate 13 bybolts 54. An anvil 55 cooperates with the cutting punches and is securedto the top plate 13. A stripper plate 56 is also secured to the punchsupport bar which also serves as a guide plate for the pile of sheetsprojected into the slot formed between this plate and the table andanvil. Each cutting punch also carries a withdrawal projection 57 at theupper end thereof which is engaged by an angular withdrawing plate 58which is secured to the punch bar 36 by a screw 59.

Operating means is connected with the punch bar 36 to reciprocate thesame and the cutting punches. This operating means show includes cammeans secured to the camshaft 32 and includes two sets of cam means oneon each side of the punch frame. Any suitable cam means may be used,however, that illustrated includes a punching cam 63 which applies thedownward or punching stroke to the cam bar and a retracting cam 64 forretracting or raising the cam bar. Each cam means operates a cam lever65 comprising two spaced plates which cam lever is pivotally mounted onthe frame on a pivot 66. The cam lever carries a cam follower 67 betweenthe plates which engages the punching cam and it also carries a camfollower 68 outside of one plate which is engaged by the retracting cam64. Anns 69 are attached at one thereof to each cam lever by an armpivot 70 which is spaced from the cam lever pivot far enough to providea punch stroke of sufficient distance to carry past the anvil. The otherend of each arm is secured to the punch bar 36 such as by arm openings71 which receive the bar. Spring means 72 may be attached to the punchbar to assist in retracting the bar and the cutting punches.

The camshaft 32 is connected with the drive gear 31 by a one revolutionclutch, FIG. 4. This clutch includes a collar 76 secured to the camshaft76 by a key 77 and has splines 78 which engage cooperating splines79 ona clutch element 80 which is slidable axially on the camshaft. Theclutch element has clutch teeth 81 at the end thereof adapted to engagewith cooperating clutch teeth 82 on the hub of the drive gear 31. Aclutch spring 83 normally presses the clutch element to slide the sameaxially on the clutch shaft to bring the clutch teeth 81, 82 intodriving engagement. A clutch release cam 84, FIG. 6, is secured to theclutch element by screws 85. A clutch operating element or roll 86 iscarried by a clutch lever 87 and engages the clutch cam to hold theclutch teeth disengaged against the pressure of the spring 83. The leveris pivotally mounted on a pivot 88 and is operated by a solenoid 89,having a connecting link 90. The solenoid is carried by the secondsupporting plate 18.

Energizing of the solenoid raises the clutch roll 86 radially away fromthe clutch cam and clutch element so that the clutch spring 83 propelsthe clutch element axially to engage the clutch teeth 81, 82, andestablish a driving connection between the drive gear 31 and thecamshaft. A spring 91 connected with the clutch lever propels the clutchoperating element or roll 86 inwardly into the path of the clutch camupon deenergization of the solenoid. Near the end of one revolution ofthe clutch element, clutch cam 84 engages the roll 86 to press theclutch element to the right as viewed in FIG. 4 and disengage the clutchteeth and terminate rotation of the clutch shaft on one revolutionthereof.

A manual switch 94 energizes the solenoid 89. A nonrepeat means, FIG. 8,prevents repeat operation should the switch 94 be held depressed. Thismeans includes a normally open switch 95 mounted on the frame to beengaged and closed by the punching cam 63. A relay 96 has contacts 97,98 in series with the solenoid and which are normally closed. Switch 95is connected in series with the relay 96 so that the latter is energizedwhen switch 95 is closed to open the connection with contact 98 andclose the connection with contact 99. If switch 94 is held depressed,relay 96 remains energized to hold contacts 97, 98 open.

The paper punch has stop means for locating the edge of the pile ofsheets the desired distance from the cutting punches. The stop meansincludes a plurality of stop bars 100 slidably mounted in a stop barframe 101 for retraction of the stop bars below the anvil. The stop barframe extends substantially across the paper punch and constitutes aplate having its longitudinal edges bent around to parallel the platebut spaced therefrom a distance corresponding to the thickness of thestop bars. A notch cut through the top and bottom edge for each slidebar provides a passage therefor. A spring 102 for each stop bar normallyprojects the same upwardly in a slot in the top plate 13 and anvil 55with their ends abutting the stripper plate 56.

Stop actuating means is provided to depress the stop means in timedrelation with the termination of the punching operating and the cuttingpunches have been raised to initial position. This stop actuating meansincludes a stop cam 105, FIG. 2, secured to the camshaft so that it isin timed relation with the operating cam means 63, 64 for the cuttingpunches. The stop cam engages a stop cam follower 106 carried by a stoplever 107 which is pivotally mounted on the frame on a pivot 104 carriedby the supporting plates of the frame. This lever has a link 1118attached thereto by a pivot 109 and the other end of the link isattached by a pivot 110 to a secondary lever 111 which is pivotallymounted on the frame to a pivot 112. The secondary lever has a secondaryconnecting link 113 pivotally mounted on a pivot 114 on the secondarylever and the other end of this link is pivotally attached by a pivot116, FIG. 7, to a retracting frame 115 which is pivotally mounted on apivot 117 to a bracket 118 secured to the stop frame 115. The retractingframe 115 carries a flange engaging a flange on each stop means 101).The retracting frame depresses the stop means and the spring 102 foreach stop means raises the same to stop position. A spring 119 attachedto the lever 1117 retains the retracting frame raised and the camfollower 166 in contact with the cam 105.

When the backstop cam 105 rotates and propels the stop cam lever 107 ina clockwise direction as viewed in FIG. 2, the link 108 is presseddownwardly to press the secondary lever 111 downwardly. This pulls thesecondary link 113 downwardly and pivots the stop frame 115 downwardlyto pull all of the stop bars 100 down below the level of the anvil ortable top. The pile of sheets which has been punched is then projectedbeneath the cutting punches to the back of the punch where it may bedeposited in a suitable table (not shown Preferably, the stop means andhence the stop bars 100, FIGS. 2 and 7, are adjustable towards and awayfrom the cutting punches so that the holes in the punched sheets may belocated at any desired distance from the edge. A slot in the anvil andtop plate is provided to allow for this adjustment. Means are providedfor adjusting the position of the stop means which includes a pair ofspaced stop rods 123 to which the stop frame 115 is secured such as by acollar 12d welded to this frame and a clamping screw 125. The stopmounting rods are mounted for longitudinal movement in holes in theframe or particularly in the frame crossbars 11. One end of one of eachof these rods is attached to a pin 126 on an adjusting lever 127 whichis mounted on a shaft 128 pivotally mounted on the frame. This shaft issecured to an indicator lever 129 having a scale 130 to indicate theposition of the stop means. By adjusting the position of the stop meansthe distance of the punched holes from the edge of the pile of sheetscan be adjusted as desired over the range of the adjustment. Theindicator lever has a slot in which is received a lock screw 131 forsecuring the indicator lever and the stop means in adjusted position.The secondary link 113 is made long enough so that it accommodates forall adjusted positions of the stop means.

Ejecting means is provided to eject the pile of punched sheetsunderneath the cutting punches after the stop means has been depressedout of the way. This means includes a rotatable ejecting roll 133carried on a roll frame 136 having spaced arms which arms are secured toa shaft 137. The ejecting roll has a sprocket 133, FIG. 3, securedthereto. A chain 139 between this sprocket and a second sprocket 140,which is freely rotatable on the shaft 137 provides a driving connectiontherebetween. A third sprocket 14l1, FIG. 1, is suitably secured to thesecond sprocket and receives a chain 142 going to a sprocket 143 carriedby the drive shaft 24. By this drive connection, the ejecting roll isconstantly rotating but it is normally below the table 21 and not incontact with a pile of sheets, as illustrated in HO. 3.

The ejecting roll is raised into contact with the bottom sheet of thepile of sheets preferably by the same cam which depresses the stop meansso that the two are at all times accurately timed together, that is, thestop means has been depressed before the ejecting roll is raised intocontact with the pile of sheets. Preferably, too, this connectionincludes a lifting arm 147 on the stop cam lever 107 which carries apull link 148 mounted on a pivot 119. This pull link has a slot 151)which receives a pin 151 carried by a lift lever 152 which is secured tothe shaft 137 carrying the arms 136 forming the ejecting roll frame. Theejecting roll is well below the table so that when the stop means cam1113' pivots the stop lever and lift arm 1417, the ejecting roll isstill below the table until the stop bars 11111 have been fullydepressed. Continued pivoting of the lift arm M7 raises the ejectingroll 133 into contact with the pile of sheets which are pressed againsta freely rotatable idler roll 153 which is rotatably mounted on a shaft154 above the table. The rotating ejecting roll projects the pile ofsheets underneath the cutting punches to the back of the punch. A spring155 flexibly presses the ejecting roll against the pile of sheets andalso accommodates for the varying number of sheets.

It is desirable that each pile of sheets be separated from each of theother piles of sheets. This may be accomplished by a known pilereceiving table (not shown) which is shifted to and from two angularpositions by means driven from the cam shaft. This shift means is shown,FIG. 1, as a gear 158 secured to the camshaft 32 and meshing with a gear159 carried on the frame and providing a l to 2 gear ratio. The gear 159has a crank or link 160 mounted on a pin 163 spaced from the center ofthe gear which rocks a lever 162 which is pivotally mounted on a spacer161. This lever is connected with a receiving table by a link 1641 toshift the table to and from each angular position for each tworevolutions of the camshaft.

This invention is presented to fill a need for improvements in a paperpunch. It is understood that various modifications in structure, as wellas changes in mode of operation, assembly and manner of use, may andoften do occur to those skilled in the art, especially after benefitingfrom the teachings of an invention. This disclosure illustrates thepreferred means of embodying the invention in useful form.

What I claim is:

1. A paper punch comprising a frame having a table, a drive shaft, ananvil, a punch bar mounted on the frame for reciprocation towards andaway from the anvil, a plurality of cutting punches, mounting meansmounting the plurality of cutting punches in alignment with the punchbar so as to be engaged thereby, the anvil cooperating with the cuttingpunches; operating means connected with the punch bar to reciprocate thesame in one direction towards the anvil for punching and then retractthe same to initial position including operating cam means, a camshaftcarrying the cam means, and clutch means to connect the camshaft withthe drive shaft and disconnect the same on one revolution of theoperating cam means, the operating cam means providing a dwell for theoperating means after the return of the punch bar and cutting punches toinitial position; stop means including stop bars and mounting meansmounting the stop bars adjacent to the cutting punches and for movementfrom stop position to a position below the anvil and return, ejectingmeans including a roll frame and an ejecting roll carried thereby anddriven from a drive shaft, the roll frame being movably mounted to raisethe roll into contact with the pile of punched sheets and eject the pileunder the cutting punches to the back of the punch, and actuating meansconnected with the stop bars to retract and return the same andconnected with the ejecting means to bring the ejecting roll intocontact with the pile of sheets after the stop bars have been retracted.

2. A paper punch as in claim 1 in which the actuating means is a singleactuating cam carried by the camshaft.

3. A paper punch as in claim 2 in which the connection between theactuating cam and the ejecting roll frame is a cam lever, and theconnection between the cam lever and the roll frame includes a spring toresiliently pull the ejecting roll above the table into contact with apile of sheets.

4. A paper punch as in claim 1 in which the operating means for thepunch bar includes an operating lever mounted on the frame on a pivotincluding a pair of spaced plates, arm means connecting the operatinglever with the punch bar at a point spaced from the pivot, the cam meansincluding a drive cam between the spaced plates of the operating leverand a retracting cam, a first cam follower carried by the operatinglever and engaged by the drive cam to drive the punch bar and cuttingpunches downwardly and a second cam follower spaced angularly from thefirst cam follower and engaged by the retracting cam to retract thepunch bar upwardly to initial position.

5. A paper punch as in claim 4 including a solenoid connected with theclutch means to release the same, spring means to engage the clutchmeans, a normally closed operating switch connected with the solenoid, anormally closed relay switch in series with the solenoid circuit, andnonrepeat means connected with the normally closed relay switchineluding a relay to open the same and the relay remaining energized solong as the operating switch is held closed.

6. A paper punch as in claim 1 in which the stop actuating meansincludes a stop cam lever operated by the stop cam means, the ejectingroll frame being pivotally mounted on the main frame and normallyretaining the ejecting roll below the table far enough so that theejecting roll is brought into contact with the bottom of the pile ofsheets after the backstop means has been retracted.

7. A paper punch as in claim 1 in which the mounting means for the stopbars is mounted for movement towards and away from the cutting punches,and the stop retracting means engaging the stop bars in all adjustedpositions.

8. A paper punch as in claim 7 in which the mounting means for the stopbars is adjustably mounted to adjust the stop bars towards and away fromthe cutting punches, and in which the retracting means for the stop barsincludes a retracting frame pivotally mounted on the mounting means, anda connecting link connected with the retracting frame of substantiallength to accommodate for the adjusted positions of the mounting means.

9. A paper punch as in claim 1 in which the clutch means includes aclutch element slidably mounted on the clutch shaft, a clutch releasecam carried by the clutch element, a clutch lever having a clutchoperating element carried thereby, a pivot pivotally mounting the clutchlever to move the clutch operating element radially away from the clutchrelease cam and radially inwardly to return the same into the path ofthe clutch cam and shift the clutch element to release the same.

10. A paper punch as in claim 1 including selector pins for each cuttingpunch having a rectangular connecting portion providing flat surfaces,selector pin mounting means mounting the selector pins with a flatsurface of the connecting portion engaging the bottom of the punch barto retain the pins against turning, and the selector pin mounting meansmounting the selector pins for movement to and from a position inalignment with the cutting punches.

1. A paper punch comprising a frame having a table, a drive shaft, ananvil, a punch bar mounted on the frame for reciprocation towards andaway from the anvil, a plurality of cutting punches, mounting meansmounting the plurality of cutting punches in alignment with the punchbar so as to be engaged thereby, the anvil cooperating with the cuttingpunches; operating means connected with the punch bar to reciprocate thesame in one direction towards the anvil for punching and then retractthe same to initial position including operating cam means, a camshaftcarrying the cam means, and clutch means to connect the camshaft withthe drive shaft and disconnect the same on one revolution of theoperating cam means, the operating cam means providing a dwell for theoperating means after the return of the punch bar and cutting punches toinitial position; stop means including stop bars and mounting meansmounting the stop bars adjacent to the cutting punches and for movementfrom stop position to a position below the anvil and return, ejectingmeans including a roll frame and an ejecting roll carried thereby anddriven from a drive shaft, the roll frame being movably mounted to raisethe roll into contact with the pile of punched sheets and eject the pileunder the cutting punches to the back of the punch, and actuating meansconnected with the stop bars to retract and return the same andconnected with the ejecting means to bring the ejecting roll intocontact with the pile of sheets after the stop bars have been retracted.2. A paper punch as in claim 1 in which the actuating means is a singleactuating cam carried by the camshaft.
 3. A paper punch as in claim 2 inwhich the connection between the actuating cam and the ejecting rollframe is a cam lever, and the connection between the cam lever and theroll frame includes a spring to resiliently pull the ejecting roll abovethe table into contact with a pile of sheets.
 4. A paper punch as inclaim 1 in which the operating means for the punch bar includes anoperating lever mounted on the frame on a pivot including a pair ofspaced plates, arm means connecting the operating lever with the punchbar at a point spaced from the pivot, the cam means including a drivecam between the spaced plates of the operating lever and a retractingcam, a first cam follower carried by the operating lever and engaged bythe drive cam to drive the punch bar and cutting punches downwardly anda second cam follower spaced angularly from the first cam follower andengaged by the retracting cam to retract the punch bar upwardly toinitial position.
 5. A paper punch as in claim 4 including a solenoidconnected with the clutch means to release the same, spring means toengage the clutch means, a normally closed operating switch connectedwith the solenoid, a normally closed relay switch in series with thesolenoid circuit, and nonrepeat means connected with the normally closedrelay switch including a relay to open the same and the relay remainingenergized so lonG as the operating switch is held closed.
 6. A paperpunch as in claim 1 in which the stop actuating means includes a stopcam lever operated by the stop cam means, the ejecting roll frame beingpivotally mounted on the main frame and normally retaining the ejectingroll below the table far enough so that the ejecting roll is broughtinto contact with the bottom of the pile of sheets after the backstopmeans has been retracted.
 7. A paper punch as in claim 1 in which themounting means for the stop bars is mounted for movement towards andaway from the cutting punches, and the stop retracting means engagingthe stop bars in all adjusted positions.
 8. A paper punch as in claim 7in which the mounting means for the stop bars is adjustably mounted toadjust the stop bars towards and away from the cutting punches, and inwhich the retracting means for the stop bars includes a retracting framepivotally mounted on the mounting means, and a connecting link connectedwith the retracting frame of substantial length to accommodate for theadjusted positions of the mounting means.
 9. A paper punch as in claim 1in which the clutch means includes a clutch element slidably mounted onthe clutch shaft, a clutch release cam carried by the clutch element, aclutch lever having a clutch operating element carried thereby, a pivotpivotally mounting the clutch lever to move the clutch operating elementradially away from the clutch release cam and radially inwardly toreturn the same into the path of the clutch cam and shift the clutchelement to release the same.
 10. A paper punch as in claim 1 includingselector pins for each cutting punch having a rectangular connectingportion providing flat surfaces, selector pin mounting means mountingthe selector pins with a flat surface of the connecting portion engagingthe bottom of the punch bar to retain the pins against turning, and theselector pin mounting means mounting the selector pins for movement toand from a position in alignment with the cutting punches.